Knotting mechanism.



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PATENTED NOV. 10, 1903.

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KNOTTING MECHANISM.

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presses, in which UNITED STATES l Patented November 10, 1903.

PATENT OFFICE.

KNOTTING MECHANISM.

SPECIFICATION forming- Application fiiea'a ru 21, 1903. Serial 1%.

To all? whom, it may concern:

Be it known that I, LEWIS B. WYGANT, a a top plan view of citizen of the United States of America, residing at the city and county of Denver and 1 State of Colorado,

and useful Improvements in Knotting Mechhave invented certain new anism; and I'do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference. marked thereon, which form a part of this specification.

My invention relates toimprovements in knotters or knotting mechanism adapted for use in connection with self tying baling connection it will be explained in this specification, though it must. be understood that it is equally well adapted for use in other relationswhere an automatic knotting device is required. In this specification the kuot-ter proper will be described in connection with means for automatically feeding wire to the pressand in connection with a transmission device whereby the knottying mechanism is automatically controlled, the transmission device being in turn, set in motion by the completed bales 'as'they are moved forward by the plunger of the press.

The knotter proper consists of means for cutting the baling-wire and securely tying its ends together after it has been passed around the bales. I

Having briefly utlined my improved device as it willbe set forthin this specification, I will proceed to describe the same in detail, reference being made to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure l is a detail side elevation of a baliug-press equipped with my improvement. Fig. 2 isa top or plan view of the same. Fig. 3 is an enlarged side elevation of the transmission-gear, showing its relation with the automatic knotter. Fig. 4 is a top or plan view of the same. Fig. 5 is a detail inner face view of the automatic knotter, shown in elevation. Fig. 6 is a detail side elevation of the knotterlooking in the direction of the arrow Ain Fig. 5; Fig. 7 isadet-ail side olevatiou'of the kuotter looking in the knot is drawn taut.

is a detail view of 'A has been forced part of Letters Patent No. 743,998, dated November 10, 190

153-687. (No model.)

direction of the arrow B in Fig. 5. Fig. 8 is the knotter. Fig. 9 is a detail view of what is herein termed the knotter-head in its closed position. Fig. 10 is a detail view showing the knotter-head in its open position. Fig. 11 is a detail view showing the cam mechanism employed for automatically operating} the pliers used for holding one of the ends of the wire until the Fig. 12 is a detail view of the pliers, shown" in elevation. Fig. 13 is a detail view showing the manner in which the Wire enters the knotter and is retained for cutting or tying. Figs. 14 and 15 are detail views showing the mechanism for au tomatically operating the transmission-gear. Fig.16

Fig. 17 is an end viewof the same and shown as resting in the recess formed in the hating-press plunger, which is indicated by dotted lines. Fig. 18 is a perspective view of a bale, which is indicated by dotted lines, showing the wires tied in accordance with my invention. 19 is-a detail view showing the form of knot tied by my invention. Figs. 20.and 21 are two detail views of the wire-engaging spindle with which the first loop is formed in tying the .knot. Fig. 22 is a detail view of the feedrollers between which the wire is fed to a groove. These rollers are instrumental in producing the second loop in tying the knot. Figs. 23 to 27, inclusive, are detail bottom face views of the knotter-head, illustrating the various steps in the operation of tying a knot. Fig. 28' shows the initial position of the wire, as at A, leading from the reel extending through the press and having its end secured in the knotter. Fig. 29 shows the next step in the operation, in which the wire forwardly by the compressed material which is to be formed into a bale. Fig. 30 shows the wire extending entirely around the compressed material. This result is attained by a wire-carrying plunger which engages the wire at the point A'of Fig. 29; drawing the double strand of wire B B through the press, where it is secured in the knott'er. Fig. 31 shows the finished bale and the starting of the next one, in which the knotter has been operated, cutting the strand B from the loop B B and tying the knot, as at O, the strand B being thrown forward by Fig.

the wire-carrying plunger.

the compressed material the same as A in Fig. 29. Fig. 32 is a cross-section taken through the baling-press on the line 32 32 of Fig. 2 with parts shown in full. This view is taken in the direction of the arrow; but the parts 32, 33, and 34 are viewed from a position farther to the right. Fig. 33 is a cross-section taken on the line 33 33 of Fig. 2, showing the crank-and-link arrangement for operating the wire carrying plungers. This View is looking toward the right or in thedirection opposite Fig. 32. Fig. 34 is a bottom face view of the knotter-head, showing the completed knot as it is being drawn taut by the expansive reaction of the compressed hay and just before the loose ends are released. Fig. 35 is. an enlarged detail view showing the automatic connection between the knotting mechanism and the trans mission-gear. Fig. 36 is asimilar view showing the parts under tension resulting from the forward motion of the operating-rod. Fig. 37 is a similar view showing the parlsin position for transmitting motion.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the balingpress, the body portion of which may be of any well-known construction, nothing being claimed in this application upon the balingpress proper, but only I on the attachment hereinafter described for automatically placing the wires around the bale or other package or bundle and tying them together.

At the mouth of the press 5 is mounted a trip mechanism which includes a projecting arm 7 integral with a disk 7. This disk 7 is connected with the end of a spring-pressed rod 8, which. passes through a hanger or bracket 10, fast on the press. A rod 9, slid- -ably mounted on the rod 8, also passes through the bracket 10 and engages a notch cut in the disk 7 until the disk is withdrawn from the rod 9 by the travel of the bale in. leaving the press. Detail views of this mechanism are shown in Figs. 14 and 15, in which it will be seen that the bale in leaving the press travels against the arm 7, which moves with it until itsdisk 7 is carried out of engagement with the end portion of 9. v The rod or dog 9 when the disk is permitted to turn-to the position shown in Fig. and when released by the removal of the bale will return to its normal position, as shown in Fig. 14, by the action of the springs 12 and 13. The transmissiongear is actuated by the reciprocation of this rod 8, as seen in Figs. 1, 2, 3, and 4, in which 14 is the frame in which the transmission-gear is mounted. The rear end of the rod 8 passes through the upper end of an arm 15, projecting from the frame 14. This arm 15 is provided with a disk 16, pivoted ata point-17 and provided with an opening 16, through which the rod 8 loosely passes.- (See Fig. 3.) 'Also mounted on thearm 15 is a pivoted lever 18. The rod 8 passes loosely through the upper end of this lever and has a spiral spring 8 .a bevel-gear 27 fitted over its protruding end. The lowerend of the lever 18 is bifurcated to form a yoke 18, which engages the'sliding collars 19 and 20 of the sleeves 19 and 20, which are mounted on the shafts 21 and 22, respectively. Fig. 4.) The lever 18 is normally in the position shown by dotted lines in Fig. 3 and in full lines in Figs. 35 and 36. As the rod- 8 is drawn forward by means of the trip mechanism above described the tension of the spring 8 is exerted against the upper end of the lever18, (see Fig. 36,) and the rod 8 is held against a return movement by the lockingdisk 16. 25 is the power-shaft by means of which motion is imparted to the transmission gear through the bevel-gear 26,which engages on the shaft 27, mounted in the frame 14.-

Mounted on the shaft 27 is a'wheel 28, as seen in Figs. 3 and 4. This wheel 28 consists of a series of segmental gears, guides, and stops and is so mounted as to project between the sleeves 19 and 20. Mounted on the sleeves 19 and 20 and within the frame 14 are the bevel-gears 19 and 20, respectively. These gears 19and 20 are normallyin the position shown by dotted lines in Fig. 4, but when acted on by the tension of the spring 8 through the lever 18 will be carried into ongagement with the segmental gears 28 and 28. The guides and stops of the wheel 28 are so arranged as to permit the gears 19 and 20. to engage the wheel 28 at a given point only, so as to time every operation in relation to the travel of the baling-p'ressiplunger. The segmental gears 28 and 28 turn their respective gears 19 and 20 one revolution, when their further travel is prevented by the stops 28 and 28 the gear 19 being caused to travel one-half of a revolution ahead of the gear 20.

,As seen in Figs. 35, 36, and 37, the rod 8 when in its normal position rests as shown in Fig. and when drawn forward by the trip-level" as a completed bale is expelled from the press,.as above described, th'e'tension of the spring 8 is exerted against the upper end of the lever 18, and as the bale is remov'edthe rod 8 is prevented from returning to its normal (see Fig. 36,) which is slightly tilted on its pivot-point by the sp: ing 16, binding the rod against a return movement by its closelyfitting orifice 16. wheel '28 permit the gagement with its segmentalgear 28, a tension exerted on the lever 18 (see Fig. 36) will throw the gear 19 into engagement through its yoked portion 18, which engages the collar 19, mounted on the sleeve 19, with the gear 19, and as the upper end of the lever 18 reaches its forward stroke, as shown in Fig. 37, itenga-ges the'plate 16, carrying it to a vertical position against the stop 15, thus permitting the rod 8 the said plate to its normal position. To return the gears 19 and 20 to their normal position, I have'provided theprojecting lug 28$,

position by the plate 16,

When thestops on the gear 19 to enter into ento pass freely through- (See mounted on the shaft 21, causes said shaft to revolve with it. Secured to the opposite end'of the shaft 21 is a crank-arm 29, the pin 29 of which engages a slotted cross-head 30, (see Fig. 33,) provided with guide-arms 31, which extend both above and below the baling-chalnber. Links 32 (see Figs. 2, 32, and 33) connect these arms 31 with pivoted arms 33. The arms 33 are pivoted at their forward'euds to bearings 34 and have secured to matic knotter as their traveling ends the wire-carrying plungers 35. These plungers-35 consist of guidearms 35'and.plunger-arms 35. These guide arms 35 travel in ways 36, mounted on the top and bottom of the press, respectively. Mounted at the free ends of the arms 35 are the sheaves or antifriction-wheels 37, over which the wire travels as it is carried through the press. In this manner the baling-wire is passed through the press and into the aut-o'- the shaft 21 and the conmeeting-gear and crank are turned one-half of a revolution. Theoperation of the wirecarrying plungers is also timed by the transmission-gear in such a manner as to have the wire pass through the press as the hay-press plunger reaches the limit of its stroke. Transverse grooves 38 are cut in the plunger-head 38 (see Fig. 17) to form passages be-- tween the pressed material and plunger-head for the free travel of the wire-carrying plungers. As the shaft 21 completes its revolution the plunger 35 is withdrawn from the press and returnsto its normal position.

Just as the shaft 21 has traveled one-half of a revolution, feeding the wire through the press and into the knotter, the bevel-gear 20 engages the transmission-gear and the gear 20 carriesthe shaft 22 with it and actuates the automatic knotter through the instrumentality of the bevelgear 40, which engages the gear 41 on the shaft 41.

As shown in Figs. 1 to 4, I have equipped the present press with two knotters, a separate knotter being required for each band of wire employed to hold the bale. Should it be desired to secure the halo by three or four hands, a corresponding number of knotters would be employed. These knotters orkuottying mechanisms are mounted upon and actuated by the shaft 41 and are so arranged as to complete their respective operations by one revolution of the said shaft. In Figs. 5, 6, 7, and 8 are shown an inner face view, two side elevations, and a top or plan view, respectively, of one of the knotters employed.

These knotters consist of a combinationof mechanical devices actuated by a series of I will now proceed to wardly as the wedge 67 passes it.

mechanical movements of a single knotter or knotting mechanism as nearly as possible in the order of their occurrence.

The wirecarrying plunger, as above described, after passing through the hay-press enters the knotter 42 just above its base plate or floor 43, and on entering the knotter engages a pin 44, (see Figs. 5 and 13,) which is secured to a slotted yoke 45, arranged to ex- .tract previously-cut waste ends from the The plunger 35continues to travel until its end carknott-er. into the base of the knotter rying the wire loop passing 37 reaches the position under the toothed wheel 46, as shown in dotted linesin Fig. 13. The plunger35 now recedes from the knotter, and thelooped wire, remaining in the knotter, is raised to engagement with the toothed wheel 46. The looped wire to reach the position just named passes under two stationary posts 46, which serve to retain the loop in its open position and in alinement for cutting and other manipulation. To raise this looped wire into position, I have provided two reciprocating vertical posts 47 47. (See Fig. 5.) These posts 47' are rigidly secured to the cross-piece 48, which is pivoted to engaging a central pivot-pin 48. This lever '49 is mounted on a rigid post 50 and has to its outer end the operating-rod 51.;

pivoted This rod is in turn actuated by a short pin 52, secured to its upper end, gages a loose collar 58, mounted on a rod 54. This last-named rod or spindle is placed at a slight angle from a vertical position, and its lower end is provided with means for engaging and bending the wire, as hereinafter described. A second collar the upper end of the rod 54, from which a over the sheavesa lever 49,

and which en-' is mounted at short pin 55 projects into a 'cam-groove 57,

arranged in the cylindrical surface of the drum 58. The pin 56 is held from radial movement by the slotted bracket 59, through which it passes before entering the cam groove 57. As the looped end of the wire is raised in the kuotter, as above described, and engages the toothed wheel 46 one of its strands (designated A in Fig. 5) is brought into engagement with aretaining-dog 60 (see Fig.5) and its other strand B into the path of the cuttin g-blade 61. The wire, resting between this blade 61 and a stop 62, is cnt at this point. The cuttiug-blade 61 is mounted on a springpressed pin 63 and arranged to operate as follows: The pin 63 protrudes through the side wall of the knotter, where it is acted upon by a pivoted lever 64. This lever (see Fig. 6) is pivoted at a point 65 and base. frictionwheel 66 pivoted onits upper free end, which projects to a point under the drum 58 and into the path of a short lug or wedge 67thereon, thus causing the upper end to move out- The lower bent, as shown at portion of this lever 64 is 64"", in order to springpressed pin 63, and as it is caused to travel inwardly to correspond with the outhave its end rest against the oted at its opposite end, as at ward movement of its upper end it will carry the pin 63 and its blade 61 with it, cutting the wire. An adjusting-screw 68 is threaded into the lower end of the lever 64, by means of which its travel may be regulated. A short piece of waste wire, comprising the/end of the loop formed by the wire-feeding plunger 35, is cut away in tying each knot. As the wire is cut for the first time, as above described, the end projecting toward the waste loop is carried up by the toothed wheel 46, which is arranged to operate as follows:

This toothed wheel is mounted on a shaft 70,

which-extends through the knotter and is mounted in its side walls. At one end of the shaft 70 (see Fig. 7) is rigidly mounted a ratchet-wheel 71, which is engaged bya pawl or dog 72, mounted on a lever 73, the latter being loosely pivoted on the shaft 70. Pivoted to the upper or opposite end of the lever 73 is a vertical rod 74, which extends to a point under the drum 58 and into the path of a downwardly-projecting lug or wedge 78. The rod 74 passes loosel through a projecting pin or stud 75. This rod 74 and the lever 73 are held normally in their upward position, as shown in Fig. 7, by a spiral spring 76, the lower'extremity of which is secured to the lever 73'and the upper end to a stud 75, fast on the'frame 0f the machine. In the upper end of the rod 74 is mounted a friction-roller 77,and as the downwardly-projecting wedge 78 passes over the roller 77 its rod 74 is forced downwardly, turning the lever 73 and its ratchet 72 asuflicient distance to cause the ratchet and the shaft 70 to be turned a distance of one tooth. In this manner the waste looped wire is carried up and around the toothed wheel 46, where it is removed from the knotter by the extractingyoke 45, actuated by the engagement of the plunger 35 with the pin 44, as above described.

The rod 54, above referred to, has arranged at its lower end a button 54 'for engaging and bending the end of the wire out from the waste loop just described and is arranged as follows: The button end 54 is provided with a tapering center 54, a depending lip 54 and a spiral groove 54', details of which are shown in Figs. 20 and 23']. The rod 54 has a reciprocating vertical movement similar to the rod 51,with which it is connected, both being actuated by the pin 56, which engages the cam-groove 57, as above described. The button 54 engages the wire when in the position shown in Figs. 20 and 23 and turns the wire into the loop designated 1, as shown in Figs. 24, 25, 26, and 27 and illustrated in Fig. 5, by one half-turn of the rod 54. The half-turn is given to the said rod or spindle by a pinion 80 and a segment-gear 81. keyed to the upper end of the spindle in such a manneras to turn with it and at the same time permit vertical play of the spindle. This pinion meshes with a segment-gear 81, piv-' 82, and provided with a pin 83. This last-named pin The said pinion is I projects into a cam-groove 84, out in per surface of the drum 58. a

The mechanism just described forms the first loop of the knot to be tied. loop, which completes the knot, is formed from the strand of wire passed around the bale and is accomplished as*follows: The

the upmeohanism for producing the second loop is the second loop of the knot is formed, extends The second- This pin 87.

5 remaining strand of wire, at the end of which 7 across the knotter-head, as shown in the under-surface view of said knotter-head, (see Fig. 24,) and as the knotter-head is carried downwardly by the sliding posts 86 and 86, as above described, the wire rests between the rollers 90 and 100. These rollers receive their motion as shown in Figs. 7and 22. The

' roller 90 is mounted on a shaft 91, which extends up through the knotter-head and has its bearing in the frame of the knotter. A pinion 92, through which shaft 91 has vertical play, is mounted on the shaft 91 at a point to engage the gear 93, cut on the lower edge of the drum 58, as shown in Fig. 7. The roller is mounted loosely on a pivoted shaft 101 and receives its motion through the gear-wheel102,which engages the gear 94,just over the roller 90'. (See Fig. 22.) These -rollers 90 and 100 have a continuous movement with the drum 58, but are brought into closer mesh with each other when feeding the wire between them in'the following manner: The lower end of the shaft 101 is pivoted on the knotter-head, as shown at 102, and its upperend rests in a sliding plate 103, which in turn is secured to a vertical rod 105 by a connecting-pin 104, the upper end of the vertical rod being pivoted ina lug 106, projecting from the stationary frame. (See Fig. 5.) A horizontal lever 107, pivoted in a bracket 108, extends between the vertical rod 105 and the frame of the knotter. The free-end of this lever is turned at right angles to its main portion, as shown at 107, and projects into a groove 110, formed in the drum 58 just over the gear 92. Located in this groove is a projecting part or cam 111, and as the end of-the lever107,in which is mounted an antifrictionroller 109, passes over the said cam it is forced away from the drum, and its outw'ard move-.

.lIlGllt carries the rod 105 with'it, drawing the rollers 90 and 100 into closer mesh or proximity through the instrumentality of the pivoted shaft 101 and the sliding plate 103, heretofore described.

Arranged on the under face of the knotterhead -.85 is the loop-shaped groove 112, and

showniu Fig. 9.

fitted to the linotter-hcad is a shutter or clos- .groove 112 as the wire is fed through it, as hereinafter described. As seen in Figs. 9 and 10, the closing-plate 113 has an upwardly-extending portion 113, which is pivoted to a stationary bolt 1l5,and astheknotter-head is carried downwardly by the mechanism above described the closing-plate is drawn from the position shown in Fig. 10 to the position When the plate 113 is closed over the groove 112, as just described, a cutting-blade 115 secured in said closing-plate 113, cuts the wire extending between the rollers 90 and 100, which rollers are now brought into close proximity in the manner above described, securely holding the end of the wire 6 cut and feeding it through the groove 112. The end of the wire after being fed through the loop-shaped groove is deflected in such a manner as to pass over itself, forming a complete loop, as shown in Figs. and 26, its free end passing first loop formed by the button 54* of the spindle 54-and extending into an orifice 116, out in the knotter-head." (See Figs. 25 to 27.) The waste loop has nowvbeen cut away and the ends of the wire passing around the bale tied together. As the knotter -head again rises, opening the groove 112, a tapering pin 117 (see Fig.6) enters the orifice 116, impinging or catching the end of the wire resting in said orifice and holding it until the knot is drawn taut, and at the same time the free end 118 of the first loop is grasped by the automatic pliers, which are arranged to operate in the following manner: A cam-groove 119 is formed in a plate 119, which is rigidly mounted on the main shaft'41 just under the knotter-frame. Engaging this groove119 is a roller 120, which is mounted on the lower end of a pivoted lever 121, a detail of which is shown in Fig. 11. This lever 121 is pivoted to the frame, as shown at 122, and has its upper end connected to the pliers 123 by a pin 124, which is secured in the pliers and projects through the lever 121, as shownv in Fig. 12. The operation of the cam, with its operating mechanism just described, is so timed as to feed the pliers, which travel in ways 125, into the knotter just as the knot is completed, whereby the pliers grasp the end 118, as shown in Fig. 27, holding said -end until the 'knot has been drawn taut by the expansive reaction of the compressed bale. By reference to Fig. 12 it will be seen that a stop.126, mounted over thewa'ys 125, engaging inclined parts formed on orient the arms of the pliers, thus permittingthe pliers to be easily opened as they travel-into engagement.

with the wire end 118, but securely closing them upon the wire atthe endot the stroke and holding it u ntil the knot has been tied and drawn taut by the expansive reaction of the compressed bale, after which the pliers return I in Fig.

and posts 46,

between the strands of the to their normal position by reason of the cam .119, as just described.

I will now briefly but connectedly describe the operation of the knotter. The initial strand of wire A is carried through the press and secured in the knotter by engaging it with the ratchet-wheel 46 and passing it around the stationary post 46. material to be baled is now being forced into the body of the press and carries the wiresA withit and into the position shown in'Fig. 29. When sufiicient material has been compressed to form a halo, the rod 8 is manipulated by hand, (at the initial stage of the operation,) operating the plunger 35, as above described, and forming the strands B B, which are engaged by the ratchet-wheel 46 where they are held until each strand has been cut, as above described, the looped portiondi'rectly engaged by the ratchet- .wheel'forming a waste piece to be extracted by the yoke 45,as herein'described ,and its connections bring the gears 19and 20 into mesh with the segmental gears of the wheel 28 of the transmission mechanism, whereby the shafts 21 and 22 ,are rotated, the former havinga' half-revolution the start of the latter. The rotation of the shaft 21 actnates the arms 35, carrying the sheaves, whereby the loop of wire B B'(see Fig. 30) is thrust through the press and carried into the knotter. As the completed bale, formed as justdescribed, is ejected from the discharge extremity of the press the trip mechanism is actuated autotnatically,operating the rod, Sand its connectious in the tying of subsequent bales. The loop B B is caught and held by the ratchetwheel 46, (see Fig. 13,) and the plungerarms 35 are withdrawn from the pressdur- The hay oring the last half of the revolution of a shaft 1 21. The movement 'of the shaft 22 operates the shaft 41, together with the drum 58, whose cam 67, acting on the lever 64, actuates the cutter 61 and cuts the strand B of the wire, (see caught and held by the dog 60. Previously to the cutting operation the looped end of the wire has been raised by the pins 47 into engagement with the wheel 46, the pins be ing actuated by the lever by virtue of its connection with the cam-groove 57 of the drum, whereby the parts 47, 49, thrown to the dotted-line position "n Fig. 5. The ratchet-wheel 46 is actuated t; raise the toothed end of the wireto the upiiermost position (shbwn in Fig. 13) by virus of the engagement of the cam 78 of the drum with the rod 74, which acts onthe lever 73 to turn the shaft 70 through the instrumentality of the ratchet 71 and the dog 72. Simultaneously with the cutting of the wire at A, or approximately so, the spindle 54 is carried downwardly by virtue of the engagement of its pin 56 with the cam-groove 57, placing and 51. are

:33, whereby the projection 54? en- Fig. 5,) the strand A being I 

